Over here it's the time of the year when we all start to get round our tractors and make sure that they start after the winter layup.

Every year an odd magneto iginition tractor will refuse to start - "mag gone off" as we say over here. Often we can cure it by simply giving the points a good cleaning, but sometimes one has to take the magneto off and warm it up in a very low oven.

What's the experience in N. America? Does the fact that you are frozen stiff all winter protect the magnetos? Here we have little frost and a very damp climate and this seems to be the problem.